SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '23a444d5ff4b71b9863a1c299e6e1aba4145f63703d24837ca91d762af0ff6c3' 
  AND token = 'wP/gctHs9ew+UbpBYKCB3YvedUmjTPfpPHnpFiZdcVg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}